{"id":230,"date":"2016-04-05T14:14:59","date_gmt":"2016-04-05T14:14:59","guid":{"rendered":"https:\/\/hstspindles.com\/index.php\/2016\/04\/05\/what-is-gpg-and-why-is-it-important\/"},"modified":"2023-11-02T19:21:25","modified_gmt":"2023-11-02T19:21:25","slug":"what-is-gpg-and-why-is-it-important","status":"publish","type":"post","link":"https:\/\/hstspindles.com\/what-is-gpg-and-why-is-it-important\/","title":{"rendered":"What is GPG and Why is it Important?"},"content":{"rendered":"
GPG is the abbreviation for Grind \u2013 Plate \u2013 Grind. This is our process for surface restoration and it is used to restore out of tolerance critical surfaces like bearing journals to original specification.\u00a0 This process is also used for restoring tool interface surfaces like CAT or HSK tapers. Our experience shows that about 35% of all spindles require some form of surface restoration.<\/p>\n
For modern machine centers to achieve their incredible accuracy it is essential that all critical surfaces are within specification. These surfaces include bearing journals and tool interface surfaces.\u00a0 These surfaces typically have tolerances measured in microns. (0.000039\u201d).<\/p>\n